Zone is running but not showing usage in app and no way to turn it off. Checked and app/firmware is up to date. Unplugged controller, zone still running. Only thing that stops it is shutting off water supply. This has happened 3 days in a row, eventually it shuts off. Advice?
TY!
Sounds like dirty diagram and/or valve needs rebuilding
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@Thomas_Lerman is 100% correct. With a bad diaphragm, a neighboring zone starting up can trigger it. In most cases, the zone will turn itself off eventually, but in some cases, it will continue to run until water supply is shut off.
Identify your valve and purchase a new, complete valve of the same make and model. Replace everything except the main body from the new valve to the old valve. Should be a top/bonnet, diaphragm (possibly a small plastic piece as well depending on model), and solenoid.